We appreciate you writing in. Currently, Rush does not have a feature to control the speed of the Pan and Zoom.
This is just the first iteration, and our next Pan and Zoom update will be available in Rush in the coming months. With that update, you’ll be able to set the position and scale of start and endpoints and apply the effect to multiple clips at once.
You can decrease the length of the image on the timeline to get a fast effect.
New today we released version 1.5.40 of Rush and added a few extra goodies to the Pan and Zoom feature. You can now select the start and end points of this effect on still images, as well as change the scale and position as needed.